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Did you know?

Hippocrates noted that blood separates into four differently colored liquids when removed from the body and examined: a pure red liquid mixed with white liquid material with a yellow-colored froth at the top and a black substance that settles underneath; he named these the four humors (for blood, phlegm, yellow bile, and black bile).

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Blood in the urine can be a sign of a kidney stone, glomerulonephritis, or other kidney problems.

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Not getting enough sleep can greatly weaken the immune system. Lack of sleep makes you more likely to catch a cold, or more difficult to fight off an infection.

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In 1864, the first barbiturate (barbituric acid) was synthesized.

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Parkinson's disease is both chronic and progressive. This means that it persists over a long period of time and that its symptoms grow worse over time.

Evolutionary changes in the shape of oyster shells. Evolutionary changes in the shape of oyster shells.
Aggregated red-cell clusters have a streamlined shape, leading to further viscos Aggregated red-cell clusters have a streamlined shape, leading to further viscos
This chart illustrates the “drip down” model of government. In this, politics is formed by the soc This chart illustrates the “drip down” model of government. In this, politics is formed by the soc
Ethical Decision-Making Model Ethical Decision-Making Model
Crystal Shape, or Habit: Pyrite Crystal Shape, or Habit: Pyrite
If these materials were manufactured into a tubular shape and used to replace a section of the ... If these materials were manufactured into a tubular shape and used to replace a section of the ...
Video: Oogenesis Animation

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